Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880740 | Microbial reduction of iron ore | Michael Hoffmann, Robert G. Arnold | 1989-11-14 |
GS
Gregory Stephanopoulos
Overall (1989): #109,778 of 140,708Top 80%
1
Patents 1989